Abakiriya ba Trinidad na Tobago basanze isosiyete yacu ibinyujije muri Irani itanga bitumen. Mbere yibyo, isosiyete yacu yari imaze kugira ibikoresho byinshi bya emulisile byakoreshwaga muri Irani, kandi ibitekerezo byabakiriya byari bishimishije cyane. Umukiriya wo muri Trinidad na Tobago yari akeneye kugenwa bidasanzwe kuriyi nshuro. Kugirango duhuze byimazeyo ibyifuzo byabakoresha, utanga isoko yashyize imbere isosiyete yacu. Kugeza ubu, kwishyura ibicuruzwa byabakiriya byakiriwe byuzuye, kandi isosiyete yacu yihutishije umusaruro.

Ibikoresho bya emulisile bitumen nibikoresho byikoranabuhanga bikuze byakozwe nisosiyete yacu. Kuva yatangira gukoreshwa no gukoreshwa ku isoko, yatoneshejwe kandi ishimwa nabakiriya. Urakoze cyane kumenyekanisha abakiriya bashya kandi bashaje. Itsinda rya Sinoroader rizakomeza gukora cyane kugirango rihe abakiriya ibikoresho byujuje ubuziranenge na serivisi zuzuye nyuma yo kugurisha.